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<FONT color="green">001</FONT>    package org.codemonkey.javareflection;<a name="line.1"></a>
<FONT color="green">002</FONT>    <a name="line.2"></a>
<FONT color="green">003</FONT>    import java.lang.reflect.AccessibleObject;<a name="line.3"></a>
<FONT color="green">004</FONT>    import java.lang.reflect.Constructor;<a name="line.4"></a>
<FONT color="green">005</FONT>    import java.lang.reflect.Field;<a name="line.5"></a>
<FONT color="green">006</FONT>    import java.lang.reflect.InvocationTargetException;<a name="line.6"></a>
<FONT color="green">007</FONT>    import java.lang.reflect.Method;<a name="line.7"></a>
<FONT color="green">008</FONT>    import java.util.ArrayList;<a name="line.8"></a>
<FONT color="green">009</FONT>    import java.util.Arrays;<a name="line.9"></a>
<FONT color="green">010</FONT>    import java.util.Collection;<a name="line.10"></a>
<FONT color="green">011</FONT>    import java.util.EnumSet;<a name="line.11"></a>
<FONT color="green">012</FONT>    import java.util.LinkedHashMap;<a name="line.12"></a>
<FONT color="green">013</FONT>    import java.util.LinkedHashSet;<a name="line.13"></a>
<FONT color="green">014</FONT>    import java.util.List;<a name="line.14"></a>
<FONT color="green">015</FONT>    import java.util.Map;<a name="line.15"></a>
<FONT color="green">016</FONT>    <a name="line.16"></a>
<FONT color="green">017</FONT>    /**<a name="line.17"></a>
<FONT color="green">018</FONT>     * This class utilizes functionality of the Java class &lt;code&gt;java.lang.reflect&lt;/code&gt;. Specifically, this reflection tool is designed to<a name="line.18"></a>
<FONT color="green">019</FONT>     * perform advanced method or constructor lookups, using a combination of {@link LookupMode} strategies.<a name="line.19"></a>
<FONT color="green">020</FONT>     * &lt;p&gt;<a name="line.20"></a>
<FONT color="green">021</FONT>     * Aside from that there are some nifty methods for things such as:<a name="line.21"></a>
<FONT color="green">022</FONT>     * &lt;ul&gt;<a name="line.22"></a>
<FONT color="green">023</FONT>     * &lt;li&gt;finding out if a given string matches a package name ({@link #isPackage(String)}),&lt;/li&gt;<a name="line.23"></a>
<FONT color="green">024</FONT>     * &lt;li&gt;returning the widest number type that will fit a any number on a given list of numbers ({@link #widestNumberClass(Number...)}),&lt;/li&gt;<a name="line.24"></a>
<FONT color="green">025</FONT>     * &lt;li&gt;a method to autobox a given value to its counterpart ({@link #autobox(Class)}),&lt;/li&gt;<a name="line.25"></a>
<FONT color="green">026</FONT>     * &lt;li&gt;A couple of methods to resolve a direct property of a given object (though they may move to {@link FieldUtils}),&lt;/li&gt;<a name="line.26"></a>
<FONT color="green">027</FONT>     * &lt;li&gt;Various handy methods for collecting information on a given &lt;code&gt;Object&lt;/code&gt;, such as list of methods, properties or types&lt;/li&gt;<a name="line.27"></a>
<FONT color="green">028</FONT>     * &lt;li&gt;An advanced &lt;code&gt;Class&lt;/code&gt; lookup ({@link #locateClass(String, boolean, ExternalClassLoader)}), that allows a<a name="line.28"></a>
<FONT color="green">029</FONT>     * full scan (to try all packages known) and an optional {@link ExternalClassLoader} instance that is able to actually compile a .java file<a name="line.29"></a>
<FONT color="green">030</FONT>     * on the fly and load its compile .class file&lt;/li&gt;<a name="line.30"></a>
<FONT color="green">031</FONT>     * &lt;/ul&gt;<a name="line.31"></a>
<FONT color="green">032</FONT>     * &lt;strong&gt;About the method / constructor lookup facility:&lt;/strong&gt;<a name="line.32"></a>
<FONT color="green">033</FONT>     * &lt;p&gt;<a name="line.33"></a>
<FONT color="green">034</FONT>     * An expanded version of &lt;code&gt;getConstructor&lt;/code&gt; is implemented that tries to find a constructor of a given datatype, with a given<a name="line.34"></a>
<FONT color="green">035</FONT>     * argument datatypelist, where types do not have to match formal types (auto-boxing, supertypes, implemented interfaces and type<a name="line.35"></a>
<FONT color="green">036</FONT>     * conversions are allowed as they are included in the lookup cycles). This expanded version tries a simple call first (exact match, which<a name="line.36"></a>
<FONT color="green">037</FONT>     * is provided natively by the Java) and when this fails, it generates a list of datatype arrays (signatures) with all possible versions of<a name="line.37"></a>
<FONT color="green">038</FONT>     * any type in the original list possible, and combinations thereof.<a name="line.38"></a>
<FONT color="green">039</FONT>     * &lt;p&gt;<a name="line.39"></a>
<FONT color="green">040</FONT>     * &lt;strong&gt;Observe the following (trivial) example:&lt;/strong&gt;<a name="line.40"></a>
<FONT color="green">041</FONT>     * <a name="line.41"></a>
<FONT color="green">042</FONT>     * &lt;pre&gt;<a name="line.42"></a>
<FONT color="green">043</FONT>     *      interface Foo {<a name="line.43"></a>
<FONT color="green">044</FONT>     *              void foo(Double value, Fruit fruit, char c);<a name="line.44"></a>
<FONT color="green">045</FONT>     *      }<a name="line.45"></a>
<FONT color="green">046</FONT>     *      abstract class A implements Foo {<a name="line.46"></a>
<FONT color="green">047</FONT>     *      }<a name="line.47"></a>
<FONT color="green">048</FONT>     *      abstract class B extends A {<a name="line.48"></a>
<FONT color="green">049</FONT>     *      }<a name="line.49"></a>
<FONT color="green">050</FONT>     * <a name="line.50"></a>
<FONT color="green">051</FONT>     *      JReflect.findCompatibleJavaMethod(B.class, "foo", EnumSet.allOf(LookupMode.class), double.class, Pear.class, String.class)}<a name="line.51"></a>
<FONT color="green">052</FONT>     * &lt;/pre&gt;<a name="line.52"></a>
<FONT color="green">053</FONT>     * <a name="line.53"></a>
<FONT color="green">054</FONT>     * In the above example, the method foo will be found by finding all methods named "Foo" on the interfaces implemented by supertype<a name="line.54"></a>
<FONT color="green">055</FONT>     * &lt;code&gt;A&lt;/code&gt;, and then foo's method signature will be matched using autoboxing on the &lt;code&gt;double&lt;/code&gt; type, a cast to the<a name="line.55"></a>
<FONT color="green">056</FONT>     * &lt;code&gt;Fruit&lt;/code&gt; supertype for the &lt;code&gt;Pear&lt;/code&gt; type and finally by attempting a common conversion from &lt;code&gt;String&lt;/code&gt; to<a name="line.56"></a>
<FONT color="green">057</FONT>     * &lt;code&gt;char&lt;/code&gt;. This will give you a Java {@link Method}, but you won't be able to invoke it if it was found using a less strict<a name="line.57"></a>
<FONT color="green">058</FONT>     * lookup than one with a simple exact match. There are two ways to do this: use<a name="line.58"></a>
<FONT color="green">059</FONT>     * {@link #invokeCompatibleMethod(Object, Class, String, Object...)} instead or perform the conversion yourself using<a name="line.59"></a>
<FONT color="green">060</FONT>     * {@link ValueConverter#convert(Object[], Class[], boolean)} prior to invoking the method. &lt;code&gt;<a name="line.60"></a>
<FONT color="green">061</FONT>                            ValueConverter.convert(args, method.getParameterTypes())&lt;/code&gt;.<a name="line.61"></a>
<FONT color="green">062</FONT>     * &lt;p&gt;<a name="line.62"></a>
<FONT color="green">063</FONT>     * // TODO fix comment about switching the cache&lt;br/&gt;<a name="line.63"></a>
<FONT color="green">064</FONT>     * Because this lookup is potentially very expensive, a cache is present to store lookup results. This cache is turned on/off using the<a name="line.64"></a>
<FONT color="green">065</FONT>     * constructor.<a name="line.65"></a>
<FONT color="green">066</FONT>     * &lt;p&gt;<a name="line.66"></a>
<FONT color="green">067</FONT>     * &lt;strong&gt;Types that are candidates for Autoboxing:&lt;/strong&gt;<a name="line.67"></a>
<FONT color="green">068</FONT>     * &lt;ul&gt;<a name="line.68"></a>
<FONT color="green">069</FONT>     * &lt;li&gt;&lt;strong&gt;boolean&lt;/strong&gt; &lt;code&gt;java.lang.Boolean&lt;/code&gt;&lt;/li&gt;<a name="line.69"></a>
<FONT color="green">070</FONT>     * &lt;li&gt;&lt;strong&gt;char&lt;/strong&gt; &lt;code&gt;java.lang.Character&lt;/code&gt;&lt;/li&gt;<a name="line.70"></a>
<FONT color="green">071</FONT>     * &lt;li&gt;&lt;strong&gt;byte&lt;/strong&gt; &lt;code&gt;java.lang.Byte&lt;/code&gt;&lt;/li&gt;<a name="line.71"></a>
<FONT color="green">072</FONT>     * &lt;li&gt;&lt;strong&gt;short&lt;/strong&gt; &lt;code&gt;java.lang.Short&lt;/code&gt;&lt;/li&gt;<a name="line.72"></a>
<FONT color="green">073</FONT>     * &lt;li&gt;&lt;strong&gt;int&lt;/strong&gt; &lt;code&gt;java.lang.Integer&lt;/code&gt;&lt;/li&gt;<a name="line.73"></a>
<FONT color="green">074</FONT>     * &lt;li&gt;&lt;strong&gt;long&lt;/strong&gt; &lt;code&gt;java.lang.Long&lt;/code&gt;&lt;/li&gt;<a name="line.74"></a>
<FONT color="green">075</FONT>     * &lt;li&gt;&lt;strong&gt;float&lt;/strong&gt; &lt;code&gt;java.lang.Float&lt;/code&gt;&lt;/li&gt;<a name="line.75"></a>
<FONT color="green">076</FONT>     * &lt;li&gt;&lt;strong&gt;double&lt;/strong&gt; &lt;code&gt;java.lang.Double&lt;/code&gt;&lt;/li&gt;<a name="line.76"></a>
<FONT color="green">077</FONT>     * &lt;/ul&gt;<a name="line.77"></a>
<FONT color="green">078</FONT>     * &lt;p&gt;<a name="line.78"></a>
<FONT color="green">079</FONT>     * For types that are candidates for common conversion, please see {@link ValueConverter}.<a name="line.79"></a>
<FONT color="green">080</FONT>     * <a name="line.80"></a>
<FONT color="green">081</FONT>     * @author Benny Bottema<a name="line.81"></a>
<FONT color="green">082</FONT>     * @see ValueConverter<a name="line.82"></a>
<FONT color="green">083</FONT>     * @see FieldUtils<a name="line.83"></a>
<FONT color="green">084</FONT>     * @see ExternalClassLoader FIXME make JReflect cache optional<a name="line.84"></a>
<FONT color="green">085</FONT>     */<a name="line.85"></a>
<FONT color="green">086</FONT>    public final class JReflect {<a name="line.86"></a>
<FONT color="green">087</FONT>    <a name="line.87"></a>
<FONT color="green">088</FONT>            /**<a name="line.88"></a>
<FONT color="green">089</FONT>             * Defines to allowed lookup modes for matching Java methods and constructors. Each time a lookup failed on signature type, a less<a name="line.89"></a>
<FONT color="green">090</FONT>             * strict lookup is performed, in the following order (signature means: the list of parameters defined for a method or constructor):<a name="line.90"></a>
<FONT color="green">091</FONT>             * &lt;ol&gt;<a name="line.91"></a>
<FONT color="green">092</FONT>             * &lt;li&gt;&lt;strong&gt;exact matching&lt;/strong&gt;: the given type should exactly match the found types during lookup. This lookup cycle is always<a name="line.92"></a>
<FONT color="green">093</FONT>             * performed first.&lt;/li&gt;<a name="line.93"></a>
<FONT color="green">094</FONT>             * &lt;li&gt;&lt;strong&gt;autobox matching&lt;/strong&gt;: the given type should match its boxed/unboxed version.&lt;/li&gt;<a name="line.94"></a>
<FONT color="green">095</FONT>             * &lt;li&gt;&lt;strong&gt;polymorphic interface matching&lt;/strong&gt;: the given type should match one of the implemented interfaces&lt;/li&gt;<a name="line.95"></a>
<FONT color="green">096</FONT>             * &lt;li&gt;&lt;strong&gt;polymorphic superclass matching&lt;/strong&gt;: the given type should match one of the super classes (for each superclass, the<a name="line.96"></a>
<FONT color="green">097</FONT>             * cycle is repeated, so exact and interface matching come first again before the next superclass up in the chain)&lt;/li&gt;<a name="line.97"></a>
<FONT color="green">098</FONT>             * &lt;li&gt;&lt;strong&gt;common conversion matching&lt;/strong&gt;: if all other lookups fail, one last resort is to try to convert the given type, if a<a name="line.98"></a>
<FONT color="green">099</FONT>             * common type, to any other common type and then try to find a matching method or constructor. See {@link ValueConverter} for more on<a name="line.99"></a>
<FONT color="green">100</FONT>             * the possibilities.&lt;/li&gt;<a name="line.100"></a>
<FONT color="green">101</FONT>             * &lt;/ol&gt;<a name="line.101"></a>
<FONT color="green">102</FONT>             * <a name="line.102"></a>
<FONT color="green">103</FONT>             * @author Benny Bottema<a name="line.103"></a>
<FONT color="green">104</FONT>             */<a name="line.104"></a>
<FONT color="green">105</FONT>            public enum LookupMode {<a name="line.105"></a>
<FONT color="green">106</FONT>                    /**<a name="line.106"></a>
<FONT color="green">107</FONT>                     * Indicates that looking for methods includes trying to find compatible signatures by autoboxing the specified arguments.<a name="line.107"></a>
<FONT color="green">108</FONT>                     */<a name="line.108"></a>
<FONT color="green">109</FONT>                    AUTOBOX,<a name="line.109"></a>
<FONT color="green">110</FONT>                    /**<a name="line.110"></a>
<FONT color="green">111</FONT>                     * Indicates that looking for methods includes trying to find compatible signatures by casting the specified arguments to a super<a name="line.111"></a>
<FONT color="green">112</FONT>                     * type.<a name="line.112"></a>
<FONT color="green">113</FONT>                     */<a name="line.113"></a>
<FONT color="green">114</FONT>                    CAST_TO_SUPER,<a name="line.114"></a>
<FONT color="green">115</FONT>                    /**<a name="line.115"></a>
<FONT color="green">116</FONT>                     * Indicates that looking for methods includes trying to find compatible signatures by casting the specified arguments to an<a name="line.116"></a>
<FONT color="green">117</FONT>                     * implemented interface.<a name="line.117"></a>
<FONT color="green">118</FONT>                     */<a name="line.118"></a>
<FONT color="green">119</FONT>                    CAST_TO_INTERFACE,<a name="line.119"></a>
<FONT color="green">120</FONT>                    /**<a name="line.120"></a>
<FONT color="green">121</FONT>                     * Indicates that looking for methods includes trying to find compatible signatures by automatically convert the specified<a name="line.121"></a>
<FONT color="green">122</FONT>                     * arguments.<a name="line.122"></a>
<FONT color="green">123</FONT>                     */<a name="line.123"></a>
<FONT color="green">124</FONT>                    COMMON_CONVERT;<a name="line.124"></a>
<FONT color="green">125</FONT>            }<a name="line.125"></a>
<FONT color="green">126</FONT>    <a name="line.126"></a>
<FONT color="green">127</FONT>            /**<a name="line.127"></a>
<FONT color="green">128</FONT>             * {@link Method} cache categorized by owning &lt;code&gt;Classes&lt;/code&gt; (since several owners can have a method with the same name and<a name="line.128"></a>
<FONT color="green">129</FONT>             * signature). Methods are stored based on &lt;code&gt;Method&lt;/code&gt; reference along with their unique signature (per owner), so multiple<a name="line.129"></a>
<FONT color="green">130</FONT>             * methods on one owner with the same name can coexist.&lt;br /&gt;<a name="line.130"></a>
<FONT color="green">131</FONT>             * &lt;br /&gt;<a name="line.131"></a>
<FONT color="green">132</FONT>             * This cache is being maintained to reduce lookup times when trying to find signature compatible Java methods. The possible signature<a name="line.132"></a>
<FONT color="green">133</FONT>             * combinations using autoboxing and/or automatic common conversions can become very large (7000+ with only three parameters) and can<a name="line.133"></a>
<FONT color="green">134</FONT>             * become a real problem. The more frequently a method is being called the larger the performance gain, especially for methods with long<a name="line.134"></a>
<FONT color="green">135</FONT>             * parameter lists<a name="line.135"></a>
<FONT color="green">136</FONT>             * <a name="line.136"></a>
<FONT color="green">137</FONT>             * @see JReflect#addMethodToCache(Class, String, AccessibleObject, Class[])<a name="line.137"></a>
<FONT color="green">138</FONT>             * @see JReflect#getMethodFromCache(Class, String, Class[])<a name="line.138"></a>
<FONT color="green">139</FONT>             */<a name="line.139"></a>
<FONT color="green">140</FONT>            private final static Map&lt;Class&lt;?&gt;, Map&lt;String, Map&lt;AccessibleObject, Class&lt;?&gt;[]&gt;&gt;&gt; methodCache = new LinkedHashMap&lt;Class&lt;?&gt;, Map&lt;String, Map&lt;AccessibleObject, Class&lt;?&gt;[]&gt;&gt;&gt;();<a name="line.140"></a>
<FONT color="green">141</FONT>    <a name="line.141"></a>
<FONT color="green">142</FONT>            /**<a name="line.142"></a>
<FONT color="green">143</FONT>             * A list with Number types in ascending order to wideness (or size) of each type (ie. double is wider than integer).<a name="line.143"></a>
<FONT color="green">144</FONT>             */<a name="line.144"></a>
<FONT color="green">145</FONT>            private static final Map&lt;Class&lt;?&gt;, Integer&gt; numSizes;<a name="line.145"></a>
<FONT color="green">146</FONT>    <a name="line.146"></a>
<FONT color="green">147</FONT>            static {<a name="line.147"></a>
<FONT color="green">148</FONT>                    numSizes = new LinkedHashMap&lt;Class&lt;?&gt;, Integer&gt;();<a name="line.148"></a>
<FONT color="green">149</FONT>                    int size = 0;<a name="line.149"></a>
<FONT color="green">150</FONT>                    numSizes.put(Byte.class, ++size);<a name="line.150"></a>
<FONT color="green">151</FONT>                    numSizes.put(Short.class, ++size);<a name="line.151"></a>
<FONT color="green">152</FONT>                    numSizes.put(Integer.class, ++size);<a name="line.152"></a>
<FONT color="green">153</FONT>                    numSizes.put(Long.class, ++size);<a name="line.153"></a>
<FONT color="green">154</FONT>                    numSizes.put(Float.class, ++size);<a name="line.154"></a>
<FONT color="green">155</FONT>                    numSizes.put(Double.class, ++size);<a name="line.155"></a>
<FONT color="green">156</FONT>            }<a name="line.156"></a>
<FONT color="green">157</FONT>    <a name="line.157"></a>
<FONT color="green">158</FONT>            /**<a name="line.158"></a>
<FONT color="green">159</FONT>             * Private constructor to prevent creating instances of this class.<a name="line.159"></a>
<FONT color="green">160</FONT>             */<a name="line.160"></a>
<FONT color="green">161</FONT>            private JReflect() {<a name="line.161"></a>
<FONT color="green">162</FONT>            }<a name="line.162"></a>
<FONT color="green">163</FONT>    <a name="line.163"></a>
<FONT color="green">164</FONT>            /**<a name="line.164"></a>
<FONT color="green">165</FONT>             * Searches the JVM and optionally all of its packages<a name="line.165"></a>
<FONT color="green">166</FONT>             * <a name="line.166"></a>
<FONT color="green">167</FONT>             * @param className The name of the class to locate.<a name="line.167"></a>
<FONT color="green">168</FONT>             * @param fullscan Whether a full scan through all available java packages is required.<a name="line.168"></a>
<FONT color="green">169</FONT>             * @param classLoader Optional user-provided classloader.<a name="line.169"></a>
<FONT color="green">170</FONT>             * @return The &lt;code&gt;Class&lt;/code&gt; reference if found or &lt;code&gt;null&lt;/code&gt; otherwise.<a name="line.170"></a>
<FONT color="green">171</FONT>             */<a name="line.171"></a>
<FONT color="green">172</FONT>            public static Class&lt;?&gt; locateClass(final String className, final boolean fullscan, final ExternalClassLoader classLoader) {<a name="line.172"></a>
<FONT color="green">173</FONT>                    if (fullscan) {<a name="line.173"></a>
<FONT color="green">174</FONT>                            Class&lt;?&gt; _class = null;<a name="line.174"></a>
<FONT color="green">175</FONT>                            // cycle through all packages and try allocating dynamically<a name="line.175"></a>
<FONT color="green">176</FONT>                            final Package[] ps = Package.getPackages();<a name="line.176"></a>
<FONT color="green">177</FONT>                            for (int i = 0; i &lt; ps.length &amp;&amp; _class == null; i++) {<a name="line.177"></a>
<FONT color="green">178</FONT>                                    _class = locateClass(ps[i].getName() + "." + className, classLoader);<a name="line.178"></a>
<FONT color="green">179</FONT>                            }<a name="line.179"></a>
<FONT color="green">180</FONT>                            return _class;<a name="line.180"></a>
<FONT color="green">181</FONT>                    } else {<a name="line.181"></a>
<FONT color="green">182</FONT>                            // try standard package used for most common classes<a name="line.182"></a>
<FONT color="green">183</FONT>                            return locateClass("java.lang." + className, classLoader);<a name="line.183"></a>
<FONT color="green">184</FONT>                    }<a name="line.184"></a>
<FONT color="green">185</FONT>            }<a name="line.185"></a>
<FONT color="green">186</FONT>    <a name="line.186"></a>
<FONT color="green">187</FONT>            /**<a name="line.187"></a>
<FONT color="green">188</FONT>             * This function dynamically tries to locate a class. First it searches the class-cache list, then it tries to get it from the Virtual<a name="line.188"></a>
<FONT color="green">189</FONT>             * Machine using {@code Class.forName(String)}.<a name="line.189"></a>
<FONT color="green">190</FONT>             * <a name="line.190"></a>
<FONT color="green">191</FONT>             * @param fullClassName The &lt;code&gt;Class&lt;/code&gt; that needs to be found.<a name="line.191"></a>
<FONT color="green">192</FONT>             * @param classLoader Optional user-provided classloader.<a name="line.192"></a>
<FONT color="green">193</FONT>             * @return The {@code Class} object found from cache or VM.<a name="line.193"></a>
<FONT color="green">194</FONT>             */<a name="line.194"></a>
<FONT color="green">195</FONT>            public static Class&lt;?&gt; locateClass(final String fullClassName, final ExternalClassLoader classLoader) {<a name="line.195"></a>
<FONT color="green">196</FONT>                    try {<a name="line.196"></a>
<FONT color="green">197</FONT>                            Class&lt;?&gt; _class = null;<a name="line.197"></a>
<FONT color="green">198</FONT>                            // /CLOVER:OFF<a name="line.198"></a>
<FONT color="green">199</FONT>                            if (classLoader != null) {<a name="line.199"></a>
<FONT color="green">200</FONT>                                    _class = classLoader.loadClass(fullClassName);<a name="line.200"></a>
<FONT color="green">201</FONT>                            }<a name="line.201"></a>
<FONT color="green">202</FONT>                            // /CLOVER:ON<a name="line.202"></a>
<FONT color="green">203</FONT>                            if (_class == null) {<a name="line.203"></a>
<FONT color="green">204</FONT>                                    _class = Class.forName(fullClassName);<a name="line.204"></a>
<FONT color="green">205</FONT>                            }<a name="line.205"></a>
<FONT color="green">206</FONT>                            return _class;<a name="line.206"></a>
<FONT color="green">207</FONT>                    } catch (final ClassNotFoundException e) {<a name="line.207"></a>
<FONT color="green">208</FONT>                            return null;<a name="line.208"></a>
<FONT color="green">209</FONT>                    }<a name="line.209"></a>
<FONT color="green">210</FONT>            }<a name="line.210"></a>
<FONT color="green">211</FONT>    <a name="line.211"></a>
<FONT color="green">212</FONT>            /**<a name="line.212"></a>
<FONT color="green">213</FONT>             * Simply calls {@link Class#newInstance()} and hides the exception handling boilerplate code.<a name="line.213"></a>
<FONT color="green">214</FONT>             * <a name="line.214"></a>
<FONT color="green">215</FONT>             * @param _class The datatype for which we need to create a new instance of.<a name="line.215"></a>
<FONT color="green">216</FONT>             * @param &lt;T&gt; Type used to parameterize the return instance.<a name="line.216"></a>
<FONT color="green">217</FONT>             * @return A new parameterized instance of the given type.<a name="line.217"></a>
<FONT color="green">218</FONT>             */<a name="line.218"></a>
<FONT color="green">219</FONT>            public static &lt;T&gt; T newInstanceSimple(final Class&lt;T&gt; _class) {<a name="line.219"></a>
<FONT color="green">220</FONT>                    // /CLOVER:OFF<a name="line.220"></a>
<FONT color="green">221</FONT>                    try {<a name="line.221"></a>
<FONT color="green">222</FONT>                            // /CLOVER:ON<a name="line.222"></a>
<FONT color="green">223</FONT>                            return _class.getConstructor().newInstance();<a name="line.223"></a>
<FONT color="green">224</FONT>                            // /CLOVER:OFF<a name="line.224"></a>
<FONT color="green">225</FONT>                    } catch (IllegalArgumentException e) {<a name="line.225"></a>
<FONT color="green">226</FONT>                            assert false : "we don't pass in arguments";<a name="line.226"></a>
<FONT color="green">227</FONT>                            throw new RuntimeException("unable to invoke parameterless constructor", e);<a name="line.227"></a>
<FONT color="green">228</FONT>                    } catch (SecurityException e) {<a name="line.228"></a>
<FONT color="green">229</FONT>                            throw new RuntimeException("unable to invoke parameterless constructor; security problem", e);<a name="line.229"></a>
<FONT color="green">230</FONT>                    } catch (InstantiationException e) {<a name="line.230"></a>
<FONT color="green">231</FONT>                            throw new RuntimeException("unable to complete instantiation of object", e);<a name="line.231"></a>
<FONT color="green">232</FONT>                    } catch (IllegalAccessException e) {<a name="line.232"></a>
<FONT color="green">233</FONT>                            throw new RuntimeException("unable to access parameterless constructor", e);<a name="line.233"></a>
<FONT color="green">234</FONT>                    } catch (InvocationTargetException e) {<a name="line.234"></a>
<FONT color="green">235</FONT>                            throw new RuntimeException("unable to invoke parameterless constructor", e);<a name="line.235"></a>
<FONT color="green">236</FONT>                    } catch (NoSuchMethodException e) {<a name="line.236"></a>
<FONT color="green">237</FONT>                            throw new RuntimeException("unable to find parameterless constructor (not public?)", e);<a name="line.237"></a>
<FONT color="green">238</FONT>                    }<a name="line.238"></a>
<FONT color="green">239</FONT>                    // /CLOVER:ON<a name="line.239"></a>
<FONT color="green">240</FONT>            }<a name="line.240"></a>
<FONT color="green">241</FONT>    <a name="line.241"></a>
<FONT color="green">242</FONT>            /**<a name="line.242"></a>
<FONT color="green">243</FONT>             * Locates a method on an Object using serveral searchmodes for optimization. First of all a {@link Method} cache is being maintained to<a name="line.243"></a>
<FONT color="green">244</FONT>             * quickly fetch heavily used methods. If not cached before and if a simple search (autoboxing and supertype casts) fails a more complex<a name="line.244"></a>
<FONT color="green">245</FONT>             * search is done where all interfaces are searched for the method as well. If this fails as well, this method will try to autoconvert<a name="line.245"></a>
<FONT color="green">246</FONT>             * the types of the arguments and find a matching signature that way.<a name="line.246"></a>
<FONT color="green">247</FONT>             * <a name="line.247"></a>
<FONT color="green">248</FONT>             * @param context The object to call the method from (can be null).<a name="line.248"></a>
<FONT color="green">249</FONT>             * @param datatype The class to find the method on.<a name="line.249"></a>
<FONT color="green">250</FONT>             * @param identifier The name of the method to locate.<a name="line.250"></a>
<FONT color="green">251</FONT>             * @param args A list of [non-formal] arguments.<a name="line.251"></a>
<FONT color="green">252</FONT>             * @return The return value of the invoke method, if succesful.<a name="line.252"></a>
<FONT color="green">253</FONT>             * @throws NoSuchMethodException<a name="line.253"></a>
<FONT color="green">254</FONT>             * @throws IllegalArgumentException<a name="line.254"></a>
<FONT color="green">255</FONT>             * @throws IllegalAccessException<a name="line.255"></a>
<FONT color="green">256</FONT>             * @throws InvocationTargetException<a name="line.256"></a>
<FONT color="green">257</FONT>             */<a name="line.257"></a>
<FONT color="green">258</FONT>            public static Object invokeCompatibleMethod(final Object context, final Class&lt;?&gt; datatype, final String identifier,<a name="line.258"></a>
<FONT color="green">259</FONT>                            final Object... args)<a name="line.259"></a>
<FONT color="green">260</FONT>                            throws NoSuchMethodException, IllegalArgumentException, IllegalAccessException, InvocationTargetException {<a name="line.260"></a>
<FONT color="green">261</FONT>                    // determine the signature we want to find a compatible java method for<a name="line.261"></a>
<FONT color="green">262</FONT>                    final Class&lt;?&gt;[] signature = JReflect.collectTypes(args);<a name="line.262"></a>
<FONT color="green">263</FONT>    <a name="line.263"></a>
<FONT color="green">264</FONT>                    // setup lookup procedure starting with simple search mode<a name="line.264"></a>
<FONT color="green">265</FONT>                    EnumSet&lt;LookupMode&gt; lookupMode = EnumSet.of(LookupMode.AUTOBOX, LookupMode.CAST_TO_SUPER);<a name="line.265"></a>
<FONT color="green">266</FONT>                    Method method;<a name="line.266"></a>
<FONT color="green">267</FONT>    <a name="line.267"></a>
<FONT color="green">268</FONT>                    // try to fina a compatible Java method using various lookup modes<a name="line.268"></a>
<FONT color="green">269</FONT>                    try {<a name="line.269"></a>
<FONT color="green">270</FONT>                            method = findCompatibleMethod(datatype, identifier, lookupMode, signature);<a name="line.270"></a>
<FONT color="green">271</FONT>                    } catch (final NoSuchMethodException e1) {<a name="line.271"></a>
<FONT color="green">272</FONT>                            try {<a name="line.272"></a>
<FONT color="green">273</FONT>                                    // moderate search mode<a name="line.273"></a>
<FONT color="green">274</FONT>                                    lookupMode.add(LookupMode.CAST_TO_INTERFACE);<a name="line.274"></a>
<FONT color="green">275</FONT>                                    method = findCompatibleMethod(datatype, identifier, lookupMode, signature);<a name="line.275"></a>
<FONT color="green">276</FONT>                            } catch (final NoSuchMethodException e2) {<a name="line.276"></a>
<FONT color="green">277</FONT>                                    // full searchmode<a name="line.277"></a>
<FONT color="green">278</FONT>                                    lookupMode.add(LookupMode.COMMON_CONVERT);<a name="line.278"></a>
<FONT color="green">279</FONT>                                    method = findCompatibleMethod(datatype, identifier, lookupMode, signature);<a name="line.279"></a>
<FONT color="green">280</FONT>                            }<a name="line.280"></a>
<FONT color="green">281</FONT>                    }<a name="line.281"></a>
<FONT color="green">282</FONT>    <a name="line.282"></a>
<FONT color="green">283</FONT>                    // try to invoke the method with unconverted arguments or convert them if needed<a name="line.283"></a>
<FONT color="green">284</FONT>                    try {<a name="line.284"></a>
<FONT color="green">285</FONT>                            return method.invoke(context, args);<a name="line.285"></a>
<FONT color="green">286</FONT>                    } catch (final IllegalArgumentException e) {<a name="line.286"></a>
<FONT color="green">287</FONT>                            final Object[] convertedArgs = ValueConverter.convert(args, method.getParameterTypes(), true);<a name="line.287"></a>
<FONT color="green">288</FONT>                            return method.invoke(context, convertedArgs);<a name="line.288"></a>
<FONT color="green">289</FONT>                    }<a name="line.289"></a>
<FONT color="green">290</FONT>            }<a name="line.290"></a>
<FONT color="green">291</FONT>    <a name="line.291"></a>
<FONT color="green">292</FONT>            /**<a name="line.292"></a>
<FONT color="green">293</FONT>             * Locates and invokes a {@link Constructor}using {@link #invokeConstructor(Class, Class[], Object[])}<a name="line.293"></a>
<FONT color="green">294</FONT>             * <a name="line.294"></a>
<FONT color="green">295</FONT>             * @param &lt;T&gt; Used to parameterize the returned object so that the caller doesn't need to cast.<a name="line.295"></a>
<FONT color="green">296</FONT>             * @param datatype The class to find the constructor for.<a name="line.296"></a>
<FONT color="green">297</FONT>             * @param args A list of [non-formal] arguments.<a name="line.297"></a>
<FONT color="green">298</FONT>             * @return The instantiated object of class datatype.<a name="line.298"></a>
<FONT color="green">299</FONT>             * @throws IllegalAccessException<a name="line.299"></a>
<FONT color="green">300</FONT>             * @throws InvocationTargetException<a name="line.300"></a>
<FONT color="green">301</FONT>             * @throws InstantiationException<a name="line.301"></a>
<FONT color="green">302</FONT>             * @throws NoSuchMethodException<a name="line.302"></a>
<FONT color="green">303</FONT>             * @see java.lang.reflect.Constructor#newInstance(Object[])<a name="line.303"></a>
<FONT color="green">304</FONT>             */<a name="line.304"></a>
<FONT color="green">305</FONT>            public static &lt;T&gt; T invokeCompatibleConstructor(final Class&lt;T&gt; datatype, final Object... args)<a name="line.305"></a>
<FONT color="green">306</FONT>                            throws NoSuchMethodException, IllegalAccessException, InvocationTargetException, InstantiationException {<a name="line.306"></a>
<FONT color="green">307</FONT>                    final Class&lt;?&gt;[] signature = JReflect.collectTypes(args);<a name="line.307"></a>
<FONT color="green">308</FONT>                    return invokeConstructor(datatype, signature, args);<a name="line.308"></a>
<FONT color="green">309</FONT>            }<a name="line.309"></a>
<FONT color="green">310</FONT>    <a name="line.310"></a>
<FONT color="green">311</FONT>            /**<a name="line.311"></a>
<FONT color="green">312</FONT>             * Locates and invokes a {@link Constructor}, using a customized typelist. Avoids dynamically trying to find correct parameter type<a name="line.312"></a>
<FONT color="green">313</FONT>             * list. Can also be used to force up/down casting (ie. passing a specific type of &lt;code&gt;List&lt;/code&gt; into a generic type)<a name="line.313"></a>
<FONT color="green">314</FONT>             * <a name="line.314"></a>
<FONT color="green">315</FONT>             * @param &lt;T&gt; Used to parameterize the returned object so that the caller doesn't need to cast.<a name="line.315"></a>
<FONT color="green">316</FONT>             * @param datatype The class to find the constructor for.<a name="line.316"></a>
<FONT color="green">317</FONT>             * @param signature The typelist used to find correct constructor.<a name="line.317"></a>
<FONT color="green">318</FONT>             * @param args A list of [non-formal] arguments.<a name="line.318"></a>
<FONT color="green">319</FONT>             * @return The instantiated object of class datatype.<a name="line.319"></a>
<FONT color="green">320</FONT>             * @throws IllegalAccessException<a name="line.320"></a>
<FONT color="green">321</FONT>             * @throws InvocationTargetException<a name="line.321"></a>
<FONT color="green">322</FONT>             * @throws InstantiationException<a name="line.322"></a>
<FONT color="green">323</FONT>             * @throws NoSuchMethodException<a name="line.323"></a>
<FONT color="green">324</FONT>             * @see java.lang.reflect.Constructor#newInstance(Object[])<a name="line.324"></a>
<FONT color="green">325</FONT>             */<a name="line.325"></a>
<FONT color="green">326</FONT>            public static &lt;T&gt; T invokeConstructor(final Class&lt;T&gt; datatype, final Class&lt;?&gt;[] signature, final Object[] args)<a name="line.326"></a>
<FONT color="green">327</FONT>                            throws NoSuchMethodException, IllegalAccessException, InvocationTargetException, InstantiationException {<a name="line.327"></a>
<FONT color="green">328</FONT>                    // setup lookup procedure<a name="line.328"></a>
<FONT color="green">329</FONT>                    EnumSet&lt;LookupMode&gt; lookupMode = EnumSet.of(LookupMode.AUTOBOX, LookupMode.CAST_TO_SUPER);<a name="line.329"></a>
<FONT color="green">330</FONT>                    Constructor&lt;T&gt; constructor;<a name="line.330"></a>
<FONT color="green">331</FONT>    <a name="line.331"></a>
<FONT color="green">332</FONT>                    // try to find a compatible Java constructor<a name="line.332"></a>
<FONT color="green">333</FONT>                    try {<a name="line.333"></a>
<FONT color="green">334</FONT>                            // simple search mode<a name="line.334"></a>
<FONT color="green">335</FONT>                            constructor = findCompatibleConstructor(datatype, lookupMode, signature);<a name="line.335"></a>
<FONT color="green">336</FONT>                    } catch (final NoSuchMethodException e1) {<a name="line.336"></a>
<FONT color="green">337</FONT>                            try {<a name="line.337"></a>
<FONT color="green">338</FONT>                                    // moderate search mode<a name="line.338"></a>
<FONT color="green">339</FONT>                                    lookupMode.add(LookupMode.CAST_TO_INTERFACE);<a name="line.339"></a>
<FONT color="green">340</FONT>                                    constructor = findCompatibleConstructor(datatype, lookupMode, signature);<a name="line.340"></a>
<FONT color="green">341</FONT>                            } catch (final NoSuchMethodException e2) {<a name="line.341"></a>
<FONT color="green">342</FONT>                                    // full searchmode<a name="line.342"></a>
<FONT color="green">343</FONT>                                    lookupMode.add(LookupMode.COMMON_CONVERT);<a name="line.343"></a>
<FONT color="green">344</FONT>                                    constructor = findCompatibleConstructor(datatype, lookupMode, signature);<a name="line.344"></a>
<FONT color="green">345</FONT>                            }<a name="line.345"></a>
<FONT color="green">346</FONT>                    }<a name="line.346"></a>
<FONT color="green">347</FONT>    <a name="line.347"></a>
<FONT color="green">348</FONT>                    // try to invoke the constructor with unconverted arguments or convert them if needed<a name="line.348"></a>
<FONT color="green">349</FONT>                    try {<a name="line.349"></a>
<FONT color="green">350</FONT>                            return constructor.newInstance(args);<a name="line.350"></a>
<FONT color="green">351</FONT>                    } catch (final IllegalArgumentException e) {<a name="line.351"></a>
<FONT color="green">352</FONT>                            final Object[] convertedArgs = ValueConverter.convert(args, constructor.getParameterTypes(), true);<a name="line.352"></a>
<FONT color="green">353</FONT>                            return constructor.newInstance(convertedArgs);<a name="line.353"></a>
<FONT color="green">354</FONT>                    }<a name="line.354"></a>
<FONT color="green">355</FONT>            }<a name="line.355"></a>
<FONT color="green">356</FONT>    <a name="line.356"></a>
<FONT color="green">357</FONT>            /**<a name="line.357"></a>
<FONT color="green">358</FONT>             * Creates a new array of class objects harvested from an array of objects.<a name="line.358"></a>
<FONT color="green">359</FONT>             * &lt;p&gt;<a name="line.359"></a>
<FONT color="green">360</FONT>             * NOTE: this method will never return primitive classes (such as double.class, as you can't put primitive values into an array of<a name="line.360"></a>
<FONT color="green">361</FONT>             * Objects (they will be autoboxes by the JVM).<a name="line.361"></a>
<FONT color="green">362</FONT>             * <a name="line.362"></a>
<FONT color="green">363</FONT>             * @param objects The array of objects to harvest classtypes from.<a name="line.363"></a>
<FONT color="green">364</FONT>             * @return The array with the harvested classtypes.<a name="line.364"></a>
<FONT color="green">365</FONT>             */<a name="line.365"></a>
<FONT color="green">366</FONT>            public static Class&lt;?&gt;[] collectTypes(final Object[] objects) {<a name="line.366"></a>
<FONT color="green">367</FONT>                    // collect classtypes of the arguments<a name="line.367"></a>
<FONT color="green">368</FONT>                    final Class&lt;?&gt;[] types = new Class[objects.length];<a name="line.368"></a>
<FONT color="green">369</FONT>                    for (int i = 0; i &lt; objects.length; i++) {<a name="line.369"></a>
<FONT color="green">370</FONT>                            final Object o = objects[i];<a name="line.370"></a>
<FONT color="green">371</FONT>                            types[i] = o != null ? o.getClass() : Object.class;<a name="line.371"></a>
<FONT color="green">372</FONT>                    }<a name="line.372"></a>
<FONT color="green">373</FONT>                    return types;<a name="line.373"></a>
<FONT color="green">374</FONT>            }<a name="line.374"></a>
<FONT color="green">375</FONT>    <a name="line.375"></a>
<FONT color="green">376</FONT>            /**<a name="line.376"></a>
<FONT color="green">377</FONT>             * Tries to find a {@link Constructor} of a given type, with a given typelist, where types do not match due to formal types &lt;!=&gt;<a name="line.377"></a>
<FONT color="green">378</FONT>             * simpletypes. This expanded version tries a simple call first and when it fails, it generates a list of type arrays with all possible<a name="line.378"></a>
<FONT color="green">379</FONT>             * (un)wraps of any type in the original list possible, and combinations thereof.<a name="line.379"></a>
<FONT color="green">380</FONT>             * <a name="line.380"></a>
<FONT color="green">381</FONT>             * @param &lt;T&gt; Used to parameterize the returned constructor.<a name="line.381"></a>
<FONT color="green">382</FONT>             * @param datatype The class to get the constructor from.<a name="line.382"></a>
<FONT color="green">383</FONT>             * @param lookupMode Flag indicating the search steps that need to be done.<a name="line.383"></a>
<FONT color="green">384</FONT>             * @param types The list of types as specified by the user.<a name="line.384"></a>
<FONT color="green">385</FONT>             * @return The constructor if found, otherwise exception is thrown.<a name="line.385"></a>
<FONT color="green">386</FONT>             * @exception NoSuchMethodException<a name="line.386"></a>
<FONT color="green">387</FONT>             */<a name="line.387"></a>
<FONT color="green">388</FONT>            @SuppressWarnings("unchecked")<a name="line.388"></a>
<FONT color="green">389</FONT>            public static &lt;T&gt; Constructor&lt;T&gt; findCompatibleConstructor(final Class&lt;T&gt; datatype, final EnumSet&lt;LookupMode&gt; lookupMode,<a name="line.389"></a>
<FONT color="green">390</FONT>                            final Class&lt;?&gt;... types)<a name="line.390"></a>
<FONT color="green">391</FONT>                            throws NoSuchMethodException {<a name="line.391"></a>
<FONT color="green">392</FONT>                    // first try to find the constructor in the method cache<a name="line.392"></a>
<FONT color="green">393</FONT>                    Constructor&lt;T&gt; constructor = (Constructor&lt;T&gt;) getMethodFromCache(datatype, datatype.getName(), types);<a name="line.393"></a>
<FONT color="green">394</FONT>                    if (constructor != null) {<a name="line.394"></a>
<FONT color="green">395</FONT>                            return constructor;<a name="line.395"></a>
<FONT color="green">396</FONT>                    } else {<a name="line.396"></a>
<FONT color="green">397</FONT>                            try {<a name="line.397"></a>
<FONT color="green">398</FONT>                                    // try standard call<a name="line.398"></a>
<FONT color="green">399</FONT>                                    constructor = datatype.getConstructor(types);<a name="line.399"></a>
<FONT color="green">400</FONT>                            } catch (final NoSuchMethodException e) {<a name="line.400"></a>
<FONT color="green">401</FONT>                                    // failed, try all possible wraps/unwraps<a name="line.401"></a>
<FONT color="green">402</FONT>                                    final List&lt;Class&lt;?&gt;[]&gt; typeslist = generateCompatibleSignatures(lookupMode, types);<a name="line.402"></a>
<FONT color="green">403</FONT>                                    for (final Class&lt;?&gt;[] aTypeslist : typeslist) {<a name="line.403"></a>
<FONT color="green">404</FONT>                                            try {<a name="line.404"></a>
<FONT color="green">405</FONT>                                                    constructor = datatype.getConstructor(aTypeslist);<a name="line.405"></a>
<FONT color="green">406</FONT>                                                    break;<a name="line.406"></a>
<FONT color="green">407</FONT>                                            } catch (final NoSuchMethodException x) {<a name="line.407"></a>
<FONT color="green">408</FONT>                                                    // do nothing<a name="line.408"></a>
<FONT color="green">409</FONT>                                            }<a name="line.409"></a>
<FONT color="green">410</FONT>                                    }<a name="line.410"></a>
<FONT color="green">411</FONT>                            }<a name="line.411"></a>
<FONT color="green">412</FONT>                    }<a name="line.412"></a>
<FONT color="green">413</FONT>    <a name="line.413"></a>
<FONT color="green">414</FONT>                    // if a constructor was found (and it wasn't in the cache, because method would've returned already)<a name="line.414"></a>
<FONT color="green">415</FONT>                    if (constructor != null) {<a name="line.415"></a>
<FONT color="green">416</FONT>                            addMethodToCache(datatype, datatype.getName(), constructor, types);<a name="line.416"></a>
<FONT color="green">417</FONT>                            return constructor;<a name="line.417"></a>
<FONT color="green">418</FONT>                    } else {<a name="line.418"></a>
<FONT color="green">419</FONT>                            throw new NoSuchMethodException();<a name="line.419"></a>
<FONT color="green">420</FONT>                    }<a name="line.420"></a>
<FONT color="green">421</FONT>            }<a name="line.421"></a>
<FONT color="green">422</FONT>    <a name="line.422"></a>
<FONT color="green">423</FONT>            /**<a name="line.423"></a>
<FONT color="green">424</FONT>             * Delegates to {@link #findCompatibleMethod(Class, String, EnumSet, Class...)}, using strict lookupmode (no autoboxing, casting etc.)<a name="line.424"></a>
<FONT color="green">425</FONT>             * and optional signature parameters.<a name="line.425"></a>
<FONT color="green">426</FONT>             * <a name="line.426"></a>
<FONT color="green">427</FONT>             * @param datatype The class to get the constructor from.<a name="line.427"></a>
<FONT color="green">428</FONT>             * @param methodName The name of the method to retrieve from the class.<a name="line.428"></a>
<FONT color="green">429</FONT>             * @param signature The list of types as specified by the user.<a name="line.429"></a>
<FONT color="green">430</FONT>             * @return &lt;code&gt;null&lt;/code&gt; in case of a &lt;code&gt;NoSuchMethodException&lt;/code&gt; exception.<a name="line.430"></a>
<FONT color="green">431</FONT>             * @see #findCompatibleMethod(Class, String, EnumSet, Class...)<a name="line.431"></a>
<FONT color="green">432</FONT>             */<a name="line.432"></a>
<FONT color="green">433</FONT>            public static Method findSimpleCompatibleMethod(final Class&lt;?&gt; datatype, final String methodName, final Class&lt;?&gt;... signature) {<a name="line.433"></a>
<FONT color="green">434</FONT>                    try {<a name="line.434"></a>
<FONT color="green">435</FONT>                            return findCompatibleMethod(datatype, methodName, EnumSet.noneOf(LookupMode.class), signature);<a name="line.435"></a>
<FONT color="green">436</FONT>                    } catch (final NoSuchMethodException e) {<a name="line.436"></a>
<FONT color="green">437</FONT>                            return null;<a name="line.437"></a>
<FONT color="green">438</FONT>                    }<a name="line.438"></a>
<FONT color="green">439</FONT>            }<a name="line.439"></a>
<FONT color="green">440</FONT>    <a name="line.440"></a>
<FONT color="green">441</FONT>            /**<a name="line.441"></a>
<FONT color="green">442</FONT>             * Same as &lt;code&gt;getConstructor()&lt;/code&gt;, except for getting a {@link Method} of a classtype, using the name to indicate which method<a name="line.442"></a>
<FONT color="green">443</FONT>             * should be located.<a name="line.443"></a>
<FONT color="green">444</FONT>             * <a name="line.444"></a>
<FONT color="green">445</FONT>             * @param datatype The class to get the constructor from.<a name="line.445"></a>
<FONT color="green">446</FONT>             * @param methodName The name of the method to retrieve from the class.<a name="line.446"></a>
<FONT color="green">447</FONT>             * @param lookupMode Flag indicating the search steps that need to be done.<a name="line.447"></a>
<FONT color="green">448</FONT>             * @param signature The list of types as specified by the user.<a name="line.448"></a>
<FONT color="green">449</FONT>             * @return The method if found, otherwise exception is thrown.<a name="line.449"></a>
<FONT color="green">450</FONT>             * @exception NoSuchMethodException<a name="line.450"></a>
<FONT color="green">451</FONT>             */<a name="line.451"></a>
<FONT color="green">452</FONT>            public static Method findCompatibleMethod(final Class&lt;?&gt; datatype, final String methodName, final EnumSet&lt;LookupMode&gt; lookupMode,<a name="line.452"></a>
<FONT color="green">453</FONT>                            final Class&lt;?&gt;... signature)<a name="line.453"></a>
<FONT color="green">454</FONT>                            throws NoSuchMethodException {<a name="line.454"></a>
<FONT color="green">455</FONT>                    // first try to find the method in the method cache<a name="line.455"></a>
<FONT color="green">456</FONT>                    Method method = (Method) getMethodFromCache(datatype, methodName, signature);<a name="line.456"></a>
<FONT color="green">457</FONT>                    if (method != null) {<a name="line.457"></a>
<FONT color="green">458</FONT>                            return method;<a name="line.458"></a>
<FONT color="green">459</FONT>                    } else {<a name="line.459"></a>
<FONT color="green">460</FONT>                            try {<a name="line.460"></a>
<FONT color="green">461</FONT>                                    // try standard call<a name="line.461"></a>
<FONT color="green">462</FONT>                                    method = getMethod(datatype, methodName, signature);<a name="line.462"></a>
<FONT color="green">463</FONT>                            } catch (final NoSuchMethodException e) {<a name="line.463"></a>
<FONT color="green">464</FONT>                                    // failed, try all possible wraps/unwraps<a name="line.464"></a>
<FONT color="green">465</FONT>                                    final List&lt;Class&lt;?&gt;[]&gt; signatures = generateCompatibleSignatures(lookupMode, signature);<a name="line.465"></a>
<FONT color="green">466</FONT>                                    for (final Class&lt;?&gt;[] compatibleSignature : signatures) {<a name="line.466"></a>
<FONT color="green">467</FONT>                                            try {<a name="line.467"></a>
<FONT color="green">468</FONT>                                                    method = getMethod(datatype, methodName, compatibleSignature);<a name="line.468"></a>
<FONT color="green">469</FONT>                                                    break;<a name="line.469"></a>
<FONT color="green">470</FONT>                                            } catch (final NoSuchMethodException x) {<a name="line.470"></a>
<FONT color="green">471</FONT>                                                    // do nothing<a name="line.471"></a>
<FONT color="green">472</FONT>                                            }<a name="line.472"></a>
<FONT color="green">473</FONT>                                    }<a name="line.473"></a>
<FONT color="green">474</FONT>                            }<a name="line.474"></a>
<FONT color="green">475</FONT>                    }<a name="line.475"></a>
<FONT color="green">476</FONT>    <a name="line.476"></a>
<FONT color="green">477</FONT>                    // if a method was found (and it wasn't in the cache, because method would've returned already)<a name="line.477"></a>
<FONT color="green">478</FONT>                    if (method != null) {<a name="line.478"></a>
<FONT color="green">479</FONT>                            addMethodToCache(datatype, methodName, method, signature);<a name="line.479"></a>
<FONT color="green">480</FONT>                            return method;<a name="line.480"></a>
<FONT color="green">481</FONT>                    } else {<a name="line.481"></a>
<FONT color="green">482</FONT>                            throw new NoSuchMethodException();<a name="line.482"></a>
<FONT color="green">483</FONT>                    }<a name="line.483"></a>
<FONT color="green">484</FONT>            }<a name="line.484"></a>
<FONT color="green">485</FONT>    <a name="line.485"></a>
<FONT color="green">486</FONT>            /**<a name="line.486"></a>
<FONT color="green">487</FONT>             * Searches a specific class object for a {@link Method} using java reflect using a specific signature. This method will first search<a name="line.487"></a>
<FONT color="green">488</FONT>             * all implemented interfaces for the method to avoid visiblity problems.&lt;br /&gt;<a name="line.488"></a>
<FONT color="green">489</FONT>             * &lt;br /&gt;<a name="line.489"></a>
<FONT color="green">490</FONT>             * An example of such a problem is the &lt;code&gt;Iterator&lt;/code&gt; as implemented by the &lt;code&gt;ArrayList&lt;/code&gt;. The Iterator is implemented<a name="line.490"></a>
<FONT color="green">491</FONT>             * as a private innerclass and as such not accessible by java reflect (even though the implemented methods are declared &lt;i&gt;public&lt;/i&gt;),<a name="line.491"></a>
<FONT color="green">492</FONT>             * unlike the interface's definition.<a name="line.492"></a>
<FONT color="green">493</FONT>             * <a name="line.493"></a>
<FONT color="green">494</FONT>             * @param datatype The class reference to locate the method on.<a name="line.494"></a>
<FONT color="green">495</FONT>             * @param name The name of the method to find.<a name="line.495"></a>
<FONT color="green">496</FONT>             * @param signature The signature the method should match.<a name="line.496"></a>
<FONT color="green">497</FONT>             * @return The Method found on the datatype that matched the specified signature.<a name="line.497"></a>
<FONT color="green">498</FONT>             * @throws NoSuchMethodException<a name="line.498"></a>
<FONT color="green">499</FONT>             * @see java.lang.Class#getMethod(String, Class[])<a name="line.499"></a>
<FONT color="green">500</FONT>             */<a name="line.500"></a>
<FONT color="green">501</FONT>            public static Method getMethod(final Class&lt;?&gt; datatype, final String name, final Class&lt;?&gt;... signature)<a name="line.501"></a>
<FONT color="green">502</FONT>                            throws NoSuchMethodException {<a name="line.502"></a>
<FONT color="green">503</FONT>                    for (final Class&lt;?&gt; iface : datatype.getInterfaces()) {<a name="line.503"></a>
<FONT color="green">504</FONT>                            try {<a name="line.504"></a>
<FONT color="green">505</FONT>                                    return iface.getMethod(name, signature);<a name="line.505"></a>
<FONT color="green">506</FONT>                            } catch (final NoSuchMethodException e) {<a name="line.506"></a>
<FONT color="green">507</FONT>                                    // do nothing<a name="line.507"></a>
<FONT color="green">508</FONT>                            }<a name="line.508"></a>
<FONT color="green">509</FONT>                    }<a name="line.509"></a>
<FONT color="green">510</FONT>                    return datatype.getMethod(name, signature);<a name="line.510"></a>
<FONT color="green">511</FONT>            }<a name="line.511"></a>
<FONT color="green">512</FONT>    <a name="line.512"></a>
<FONT color="green">513</FONT>            /**<a name="line.513"></a>
<FONT color="green">514</FONT>             * Initializes the list with type-arrays and starts generating beginning from index 0. This method is used for (un)wrapping.<a name="line.514"></a>
<FONT color="green">515</FONT>             * <a name="line.515"></a>
<FONT color="green">516</FONT>             * @param lookupMode Flag indicating the search steps that need to be done.<a name="line.516"></a>
<FONT color="green">517</FONT>             * @param signature The list with original user specified types.<a name="line.517"></a>
<FONT color="green">518</FONT>             * @return The list with converted type-arrays.<a name="line.518"></a>
<FONT color="green">519</FONT>             */<a name="line.519"></a>
<FONT color="green">520</FONT>            private static List&lt;Class&lt;?&gt;[]&gt; generateCompatibleSignatures(final EnumSet&lt;LookupMode&gt; lookupMode, final Class&lt;?&gt;... signature) {<a name="line.520"></a>
<FONT color="green">521</FONT>                    final List&lt;Class&lt;?&gt;[]&gt; signatures = new ArrayList&lt;Class&lt;?&gt;[]&gt;();<a name="line.521"></a>
<FONT color="green">522</FONT>                    generateCompatibleSignatures(0, lookupMode, signatures, signature);<a name="line.522"></a>
<FONT color="green">523</FONT>                    return signatures;<a name="line.523"></a>
<FONT color="green">524</FONT>            }<a name="line.524"></a>
<FONT color="green">525</FONT>    <a name="line.525"></a>
<FONT color="green">526</FONT>            /**<a name="line.526"></a>
<FONT color="green">527</FONT>             * Recursively generates a complete list of all possible (un)wraps (autoboxing), supertypes, implemented interfaces, type conversions<a name="line.527"></a>
<FONT color="green">528</FONT>             * and any combination thereof with the specified signature's elements (the individual parameter types).&lt;br /&gt;<a name="line.528"></a>
<FONT color="green">529</FONT>             * &lt;br /&gt;<a name="line.529"></a>
<FONT color="green">530</FONT>             * The combination signatures are generated in the following order:<a name="line.530"></a>
<FONT color="green">531</FONT>             * &lt;ol&gt;<a name="line.531"></a>
<FONT color="green">532</FONT>             * &lt;li&gt;no conversion; highest priority as it comes closest to user's requirement/specification&lt;/li&gt;<a name="line.532"></a>
<FONT color="green">533</FONT>             * &lt;li&gt;autoboxing; the autoboxed counterversion comes closest to the original datatype&lt;/li&gt;<a name="line.533"></a>
<FONT color="green">534</FONT>             * &lt;li&gt;interface; where methods can't be found using original type, interface placeholders are attempted&lt;/li&gt;<a name="line.534"></a>
<FONT color="green">535</FONT>             * &lt;li&gt;supertype; where methods can't be found using implemented interfaces, supertype placeholders are attempted&lt;/li&gt;<a name="line.535"></a>
<FONT color="green">536</FONT>             * &lt;li&gt;conversions; if all else fails, try to convert the datatype for common types (ie. int to String)&lt;/li&gt;<a name="line.536"></a>
<FONT color="green">537</FONT>             * &lt;/ol&gt;<a name="line.537"></a>
<FONT color="green">538</FONT>             * <a name="line.538"></a>
<FONT color="green">539</FONT>             * @param index The current index to start mutating from.<a name="line.539"></a>
<FONT color="green">540</FONT>             * @param lookupMode Flag indicating the search steps that need to be done.<a name="line.540"></a>
<FONT color="green">541</FONT>             * @param signatures The central storage list for new type-arrays.<a name="line.541"></a>
<FONT color="green">542</FONT>             * @param signature The list with current types, to mutate further upon.<a name="line.542"></a>
<FONT color="green">543</FONT>             */<a name="line.543"></a>
<FONT color="green">544</FONT>            private static void generateCompatibleSignatures(final int index, final EnumSet&lt;LookupMode&gt; lookupMode,<a name="line.544"></a>
<FONT color="green">545</FONT>                            final List&lt;Class&lt;?&gt;[]&gt; signatures, final Class&lt;?&gt;... signature) {<a name="line.545"></a>
<FONT color="green">546</FONT>                    // if new type array is completed<a name="line.546"></a>
<FONT color="green">547</FONT>                    if (index == signature.length) {<a name="line.547"></a>
<FONT color="green">548</FONT>                            signatures.add(signature);<a name="line.548"></a>
<FONT color="green">549</FONT>                    } else {<a name="line.549"></a>
<FONT color="green">550</FONT>                            // generate new array of types<a name="line.550"></a>
<FONT color="green">551</FONT>                            final Class&lt;?&gt; original = signature[index];<a name="line.551"></a>
<FONT color="green">552</FONT>    <a name="line.552"></a>
<FONT color="green">553</FONT>                            // 1. don't generate compatible list; just try the normal type first<a name="line.553"></a>
<FONT color="green">554</FONT>                            // remember, in combinations types should be allowed to be converted)<a name="line.554"></a>
<FONT color="green">555</FONT>                            generateCompatibleSignatures(index + 1, lookupMode, signatures, signature.clone());<a name="line.555"></a>
<FONT color="green">556</FONT>    <a name="line.556"></a>
<FONT color="green">557</FONT>                            // 2. generate type in which the original can be (un)wrapped<a name="line.557"></a>
<FONT color="green">558</FONT>                            if (lookupMode.contains(LookupMode.AUTOBOX)) {<a name="line.558"></a>
<FONT color="green">559</FONT>                                    final Class&lt;?&gt; autoboxed = autobox(original);<a name="line.559"></a>
<FONT color="green">560</FONT>                                    if (autoboxed != null) {<a name="line.560"></a>
<FONT color="green">561</FONT>                                            final Class&lt;?&gt;[] newSignature = replaceInArray(signature.clone(), index, autoboxed);<a name="line.561"></a>
<FONT color="green">562</FONT>                                            generateCompatibleSignatures(index + 1, lookupMode, signatures, newSignature);<a name="line.562"></a>
<FONT color="green">563</FONT>                                    }<a name="line.563"></a>
<FONT color="green">564</FONT>                            }<a name="line.564"></a>
<FONT color="green">565</FONT>    <a name="line.565"></a>
<FONT color="green">566</FONT>                            // autocast to supertype or interface?<a name="line.566"></a>
<FONT color="green">567</FONT>                            if (lookupMode.contains(LookupMode.CAST_TO_INTERFACE)) {<a name="line.567"></a>
<FONT color="green">568</FONT>                                    // 3. generate implemented interfaces the original value could be converted (cast) into<a name="line.568"></a>
<FONT color="green">569</FONT>                                    for (final Class&lt;?&gt; iface : original.getInterfaces()) {<a name="line.569"></a>
<FONT color="green">570</FONT>                                            final Class&lt;?&gt;[] newSignature = replaceInArray(signature.clone(), index, iface);<a name="line.570"></a>
<FONT color="green">571</FONT>                                            generateCompatibleSignatures(index + 1, lookupMode, signatures, newSignature);<a name="line.571"></a>
<FONT color="green">572</FONT>                                    }<a name="line.572"></a>
<FONT color="green">573</FONT>                            }<a name="line.573"></a>
<FONT color="green">574</FONT>    <a name="line.574"></a>
<FONT color="green">575</FONT>                            if (lookupMode.contains(LookupMode.CAST_TO_SUPER)) {<a name="line.575"></a>
<FONT color="green">576</FONT>                                    // 4. generate supertypes the original value could be converted (cast) into<a name="line.576"></a>
<FONT color="green">577</FONT>                                    Class&lt;?&gt; supertype = original;<a name="line.577"></a>
<FONT color="green">578</FONT>                                    while ((supertype = supertype.getSuperclass()) != null) {<a name="line.578"></a>
<FONT color="green">579</FONT>                                            final Class&lt;?&gt;[] newSignature = replaceInArray(signature.clone(), index, supertype);<a name="line.579"></a>
<FONT color="green">580</FONT>                                            generateCompatibleSignatures(index + 1, lookupMode, signatures, newSignature);<a name="line.580"></a>
<FONT color="green">581</FONT>                                    }<a name="line.581"></a>
<FONT color="green">582</FONT>                            }<a name="line.582"></a>
<FONT color="green">583</FONT>    <a name="line.583"></a>
<FONT color="green">584</FONT>                            // 5. generate types the original value could be converted into<a name="line.584"></a>
<FONT color="green">585</FONT>                            if (lookupMode.contains(LookupMode.COMMON_CONVERT)) {<a name="line.585"></a>
<FONT color="green">586</FONT>                                    for (final Class&lt;?&gt; convert : ValueConverter.collectCompatibleTypes(original)) {<a name="line.586"></a>
<FONT color="green">587</FONT>                                            final Class&lt;?&gt;[] newSignature = replaceInArray(signature.clone(), index, convert);<a name="line.587"></a>
<FONT color="green">588</FONT>                                            generateCompatibleSignatures(index + 1, lookupMode, signatures, newSignature);<a name="line.588"></a>
<FONT color="green">589</FONT>                                    }<a name="line.589"></a>
<FONT color="green">590</FONT>                            }<a name="line.590"></a>
<FONT color="green">591</FONT>                    }<a name="line.591"></a>
<FONT color="green">592</FONT>            }<a name="line.592"></a>
<FONT color="green">593</FONT>    <a name="line.593"></a>
<FONT color="green">594</FONT>            /**<a name="line.594"></a>
<FONT color="green">595</FONT>             * Emulates Java's Autoboxing feature; tries to convert a type to its (un)wrapped counter version.<a name="line.595"></a>
<FONT color="green">596</FONT>             * <a name="line.596"></a>
<FONT color="green">597</FONT>             * @param c The datatype to convert (autobox).<a name="line.597"></a>
<FONT color="green">598</FONT>             * @return The converted version of the specified type, or null.<a name="line.598"></a>
<FONT color="green">599</FONT>             */<a name="line.599"></a>
<FONT color="green">600</FONT>            public static Class&lt;?&gt; autobox(final Class&lt;?&gt; c) {<a name="line.600"></a>
<FONT color="green">601</FONT>                    // integer<a name="line.601"></a>
<FONT color="green">602</FONT>                    if (c == Integer.class) {<a name="line.602"></a>
<FONT color="green">603</FONT>                            return int.class;<a name="line.603"></a>
<FONT color="green">604</FONT>                    } else if (c == int.class) {<a name="line.604"></a>
<FONT color="green">605</FONT>                            return Integer.class;<a name="line.605"></a>
<FONT color="green">606</FONT>                    } else if (c == Boolean.class) {<a name="line.606"></a>
<FONT color="green">607</FONT>                            return boolean.class;<a name="line.607"></a>
<FONT color="green">608</FONT>                    } else if (c == boolean.class) {<a name="line.608"></a>
<FONT color="green">609</FONT>                            return Boolean.class;<a name="line.609"></a>
<FONT color="green">610</FONT>                    } else if (c == Character.class) {<a name="line.610"></a>
<FONT color="green">611</FONT>                            return char.class;<a name="line.611"></a>
<FONT color="green">612</FONT>                    } else if (c == char.class) {<a name="line.612"></a>
<FONT color="green">613</FONT>                            return Character.class;<a name="line.613"></a>
<FONT color="green">614</FONT>                    } else if (c == Byte.class) {<a name="line.614"></a>
<FONT color="green">615</FONT>                            return byte.class;<a name="line.615"></a>
<FONT color="green">616</FONT>                    } else if (c == byte.class) {<a name="line.616"></a>
<FONT color="green">617</FONT>                            return Byte.class;<a name="line.617"></a>
<FONT color="green">618</FONT>                    } else if (c == Short.class) {<a name="line.618"></a>
<FONT color="green">619</FONT>                            return short.class;<a name="line.619"></a>
<FONT color="green">620</FONT>                    } else if (c == short.class) {<a name="line.620"></a>
<FONT color="green">621</FONT>                            return Short.class;<a name="line.621"></a>
<FONT color="green">622</FONT>                    } else if (c == Long.class) {<a name="line.622"></a>
<FONT color="green">623</FONT>                            return long.class;<a name="line.623"></a>
<FONT color="green">624</FONT>                    } else if (c == long.class) {<a name="line.624"></a>
<FONT color="green">625</FONT>                            return Long.class;<a name="line.625"></a>
<FONT color="green">626</FONT>                    } else if (c == Float.class) {<a name="line.626"></a>
<FONT color="green">627</FONT>                            return float.class;<a name="line.627"></a>
<FONT color="green">628</FONT>                    } else if (c == float.class) {<a name="line.628"></a>
<FONT color="green">629</FONT>                            return Float.class;<a name="line.629"></a>
<FONT color="green">630</FONT>                    } else if (c == Double.class) {<a name="line.630"></a>
<FONT color="green">631</FONT>                            return double.class;<a name="line.631"></a>
<FONT color="green">632</FONT>                    } else if (c == double.class) {<a name="line.632"></a>
<FONT color="green">633</FONT>                            return Double.class;<a name="line.633"></a>
<FONT color="green">634</FONT>                    } else {<a name="line.634"></a>
<FONT color="green">635</FONT>                            return null;<a name="line.635"></a>
<FONT color="green">636</FONT>                    }<a name="line.636"></a>
<FONT color="green">637</FONT>            }<a name="line.637"></a>
<FONT color="green">638</FONT>    <a name="line.638"></a>
<FONT color="green">639</FONT>            /**<a name="line.639"></a>
<FONT color="green">640</FONT>             * Returns a field from the given object that goes by the name of &lt;code&gt;fieldName&lt;/code&gt;. If &lt;code&gt;o&lt;/code&gt; is a Class object, a static<a name="line.640"></a>
<FONT color="green">641</FONT>             * field will be returned.<a name="line.641"></a>
<FONT color="green">642</FONT>             * <a name="line.642"></a>
<FONT color="green">643</FONT>             * @param o The reference to the object to fetch the property value from.<a name="line.643"></a>
<FONT color="green">644</FONT>             * @param fieldName The identifier or name of the member field/property.<a name="line.644"></a>
<FONT color="green">645</FONT>             * @return The value of the &lt;code&gt;Field&lt;/code&gt; or in case of a Dynamic the property value.<a name="line.645"></a>
<FONT color="green">646</FONT>             */<a name="line.646"></a>
<FONT color="green">647</FONT>            public static Field solveField(final Object o, final String fieldName) {<a name="line.647"></a>
<FONT color="green">648</FONT>                    try {<a name="line.648"></a>
<FONT color="green">649</FONT>                            if (o.getClass().equals(Class.class)) {<a name="line.649"></a>
<FONT color="green">650</FONT>                                    // Java static field<a name="line.650"></a>
<FONT color="green">651</FONT>                                    return ((Class&lt;?&gt;) o).getField(fieldName);<a name="line.651"></a>
<FONT color="green">652</FONT>                            } else {<a name="line.652"></a>
<FONT color="green">653</FONT>                                    // Java instance field<a name="line.653"></a>
<FONT color="green">654</FONT>                                    return o.getClass().getField(fieldName);<a name="line.654"></a>
<FONT color="green">655</FONT>                            }<a name="line.655"></a>
<FONT color="green">656</FONT>                    } catch (NoSuchFieldException e) {<a name="line.656"></a>
<FONT color="green">657</FONT>                            return null;<a name="line.657"></a>
<FONT color="green">658</FONT>                    }<a name="line.658"></a>
<FONT color="green">659</FONT>            }<a name="line.659"></a>
<FONT color="green">660</FONT>    <a name="line.660"></a>
<FONT color="green">661</FONT>            /**<a name="line.661"></a>
<FONT color="green">662</FONT>             * Retrieves a {@link Method} from a cache.<a name="line.662"></a>
<FONT color="green">663</FONT>             * <a name="line.663"></a>
<FONT color="green">664</FONT>             * @param datatype The owning {@link Class} of the &lt;code&gt;Method&lt;/code&gt; being searched for.<a name="line.664"></a>
<FONT color="green">665</FONT>             * @param method The name of the method that is being searched for.<a name="line.665"></a>
<FONT color="green">666</FONT>             * @param signature The parameter list of the method we need to match if a method was found by name.<a name="line.666"></a>
<FONT color="green">667</FONT>             * @return The &lt;code&gt;Method&lt;/code&gt; found on the specified owner with matching name and signature.<a name="line.667"></a>
<FONT color="green">668</FONT>             * @see JReflect#methodCache<a name="line.668"></a>
<FONT color="green">669</FONT>             * @see JReflect#addMethodToCache(Class, String, AccessibleObject, Class...)<a name="line.669"></a>
<FONT color="green">670</FONT>             */<a name="line.670"></a>
<FONT color="green">671</FONT>            private final static &lt;T&gt; AccessibleObject getMethodFromCache(final Class&lt;T&gt; datatype, final String method, final Class&lt;?&gt;... signature) {<a name="line.671"></a>
<FONT color="green">672</FONT>                    final Map&lt;String, Map&lt;AccessibleObject, Class&lt;?&gt;[]&gt;&gt; owner = methodCache.get(datatype);<a name="line.672"></a>
<FONT color="green">673</FONT>                    // we know only methods with parameter list are stored in the cache<a name="line.673"></a>
<FONT color="green">674</FONT>                    if (signature.length &gt; 0) {<a name="line.674"></a>
<FONT color="green">675</FONT>                            // get owner, its methods matching specified name and match their signatures<a name="line.675"></a>
<FONT color="green">676</FONT>                            if (owner != null) {<a name="line.676"></a>
<FONT color="green">677</FONT>                                    final Map&lt;AccessibleObject, Class&lt;?&gt;[]&gt; signatures = owner.get(method);<a name="line.677"></a>
<FONT color="green">678</FONT>                                    if (signatures != null) {<a name="line.678"></a>
<FONT color="green">679</FONT>                                            for (final Map.Entry&lt;AccessibleObject, Class&lt;?&gt;[]&gt; entry : signatures.entrySet()) {<a name="line.679"></a>
<FONT color="green">680</FONT>                                                    if (Arrays.equals(entry.getValue(), signature)) {<a name="line.680"></a>
<FONT color="green">681</FONT>                                                            return entry.getKey();<a name="line.681"></a>
<FONT color="green">682</FONT>                                                    }<a name="line.682"></a>
<FONT color="green">683</FONT>                                            }<a name="line.683"></a>
<FONT color="green">684</FONT>                                    }<a name="line.684"></a>
<FONT color="green">685</FONT>                            }<a name="line.685"></a>
<FONT color="green">686</FONT>                    }<a name="line.686"></a>
<FONT color="green">687</FONT>                    // method not found or known not to be stored due to absent parameter list<a name="line.687"></a>
<FONT color="green">688</FONT>                    return null;<a name="line.688"></a>
<FONT color="green">689</FONT>            }<a name="line.689"></a>
<FONT color="green">690</FONT>    <a name="line.690"></a>
<FONT color="green">691</FONT>            /**<a name="line.691"></a>
<FONT color="green">692</FONT>             * Adds a specific &lt;code&gt;Method&lt;/code&gt; to the cache.<a name="line.692"></a>
<FONT color="green">693</FONT>             * <a name="line.693"></a>
<FONT color="green">694</FONT>             * @param datatype The &lt;code&gt;Class&lt;/code&gt; that owns the &lt;code&gt;Method&lt;/code&gt;.<a name="line.694"></a>
<FONT color="green">695</FONT>             * @param method The &lt;code&gt;Method&lt;/code&gt;'s name by which methods can be found on the specified owner.<a name="line.695"></a>
<FONT color="green">696</FONT>             * @param methodRef The &lt;code&gt;Method&lt;/code&gt; reference that's actually being stored in the cache.<a name="line.696"></a>
<FONT color="green">697</FONT>             * @param signature The parameter list of the &lt;code&gt;Method&lt;/code&gt; being stored.<a name="line.697"></a>
<FONT color="green">698</FONT>             * @see JReflect#methodCache<a name="line.698"></a>
<FONT color="green">699</FONT>             * @see JReflect#getMethodFromCache(Class, String, Class...)<a name="line.699"></a>
<FONT color="green">700</FONT>             */<a name="line.700"></a>
<FONT color="green">701</FONT>            private final static void addMethodToCache(final Class&lt;?&gt; datatype, final String method, final AccessibleObject methodRef,<a name="line.701"></a>
<FONT color="green">702</FONT>                            final Class&lt;?&gt;... signature) {<a name="line.702"></a>
<FONT color="green">703</FONT>                    // only store methods with a parameter list<a name="line.703"></a>
<FONT color="green">704</FONT>                    if (signature.length &gt; 0) {<a name="line.704"></a>
<FONT color="green">705</FONT>                            // get or create owner entry<a name="line.705"></a>
<FONT color="green">706</FONT>                            Map&lt;String, Map&lt;AccessibleObject, Class&lt;?&gt;[]&gt;&gt; owner = methodCache.get(datatype);<a name="line.706"></a>
<FONT color="green">707</FONT>                            owner = owner != null ? owner : new LinkedHashMap&lt;String, Map&lt;AccessibleObject, Class&lt;?&gt;[]&gt;&gt;();<a name="line.707"></a>
<FONT color="green">708</FONT>                            // get or create list of methods with specified method name<a name="line.708"></a>
<FONT color="green">709</FONT>                            Map&lt;AccessibleObject, Class&lt;?&gt;[]&gt; methods = owner.get(method);<a name="line.709"></a>
<FONT color="green">710</FONT>                            methods = methods != null ? methods : new LinkedHashMap&lt;AccessibleObject, Class&lt;?&gt;[]&gt;();<a name="line.710"></a>
<FONT color="green">711</FONT>                            // add or overwrite method entry<a name="line.711"></a>
<FONT color="green">712</FONT>                            methods.put(methodRef, signature);<a name="line.712"></a>
<FONT color="green">713</FONT>                            // finally shelve all the stuff back<a name="line.713"></a>
<FONT color="green">714</FONT>                            methods.put(methodRef, signature);<a name="line.714"></a>
<FONT color="green">715</FONT>                            owner.put(method, methods);<a name="line.715"></a>
<FONT color="green">716</FONT>                            methodCache.put(datatype, owner);<a name="line.716"></a>
<FONT color="green">717</FONT>                    }<a name="line.717"></a>
<FONT color="green">718</FONT>            }<a name="line.718"></a>
<FONT color="green">719</FONT>    <a name="line.719"></a>
<FONT color="green">720</FONT>            /**<a name="line.720"></a>
<FONT color="green">721</FONT>             * Assigns a value to a field &lt;code&gt;id&lt;/code&gt; on the given object &lt;code&gt;o&lt;/code&gt;. If a simple assignment fails, a common conversion will<a name="line.721"></a>
<FONT color="green">722</FONT>             * be attempted.<a name="line.722"></a>
<FONT color="green">723</FONT>             * <a name="line.723"></a>
<FONT color="green">724</FONT>             * @param o The object to find the field on.<a name="line.724"></a>
<FONT color="green">725</FONT>             * @param property The name of the field we're assigning the value to.<a name="line.725"></a>
<FONT color="green">726</FONT>             * @param value The value to assign to the field, may be converted to the field's type through common conversion.<a name="line.726"></a>
<FONT color="green">727</FONT>             * @return The actual value that was assigned (the original or the converted value).<a name="line.727"></a>
<FONT color="green">728</FONT>             * @throws IllegalAccessException Thrown by {@link Field#set(Object, Object)}<a name="line.728"></a>
<FONT color="green">729</FONT>             * @throws NoSuchFieldException<a name="line.729"></a>
<FONT color="green">730</FONT>             * @see ValueConverter#convert(Object, Class)<a name="line.730"></a>
<FONT color="green">731</FONT>             */<a name="line.731"></a>
<FONT color="green">732</FONT>            public static Object assignToField(final Object o, final String property, final Object value)<a name="line.732"></a>
<FONT color="green">733</FONT>                            throws IllegalAccessException, NoSuchFieldException {<a name="line.733"></a>
<FONT color="green">734</FONT>                    Object assignedValue = value;<a name="line.734"></a>
<FONT color="green">735</FONT>                    final Field field = solveField(o, property);<a name="line.735"></a>
<FONT color="green">736</FONT>                    if (field != null) {<a name="line.736"></a>
<FONT color="green">737</FONT>                            try {<a name="line.737"></a>
<FONT color="green">738</FONT>                                    field.set(o, value);<a name="line.738"></a>
<FONT color="green">739</FONT>                            } catch (final IllegalArgumentException ie) {<a name="line.739"></a>
<FONT color="green">740</FONT>                                    assignedValue = ValueConverter.convert(value, field.getType());<a name="line.740"></a>
<FONT color="green">741</FONT>                                    field.set(o, assignedValue);<a name="line.741"></a>
<FONT color="green">742</FONT>                            }<a name="line.742"></a>
<FONT color="green">743</FONT>                            return assignedValue;<a name="line.743"></a>
<FONT color="green">744</FONT>                    } else {<a name="line.744"></a>
<FONT color="green">745</FONT>                            throw new NoSuchFieldException();<a name="line.745"></a>
<FONT color="green">746</FONT>                    }<a name="line.746"></a>
<FONT color="green">747</FONT>            }<a name="line.747"></a>
<FONT color="green">748</FONT>    <a name="line.748"></a>
<FONT color="green">749</FONT>            /**<a name="line.749"></a>
<FONT color="green">750</FONT>             * Validates whether a string represents a valid package.<a name="line.750"></a>
<FONT color="green">751</FONT>             * <a name="line.751"></a>
<FONT color="green">752</FONT>             * @param name The string representing a list of packages.<a name="line.752"></a>
<FONT color="green">753</FONT>             * @return A boolean indicating whether name represents a valid package.<a name="line.753"></a>
<FONT color="green">754</FONT>             */<a name="line.754"></a>
<FONT color="green">755</FONT>            public static boolean isPackage(final String name) {<a name="line.755"></a>
<FONT color="green">756</FONT>                    return name.equals("java") || Package.getPackage(name) != null;<a name="line.756"></a>
<FONT color="green">757</FONT>            }<a name="line.757"></a>
<FONT color="green">758</FONT>    <a name="line.758"></a>
<FONT color="green">759</FONT>            /**<a name="line.759"></a>
<FONT color="green">760</FONT>             * Returns the smallest class that can hold all of the specified numbers.<a name="line.760"></a>
<FONT color="green">761</FONT>             * <a name="line.761"></a>
<FONT color="green">762</FONT>             * @param numbers The list with numbers that all should fit in the &lt;code&gt;Number&lt;/code&gt; container.<a name="line.762"></a>
<FONT color="green">763</FONT>             * @return The &lt;code&gt;Number&lt;/code&gt; container that is just large enough for all specified numbers.<a name="line.763"></a>
<FONT color="green">764</FONT>             */<a name="line.764"></a>
<FONT color="green">765</FONT>            public static Class&lt;?&gt; widestNumberClass(final Number... numbers) {<a name="line.765"></a>
<FONT color="green">766</FONT>                    // find widest number<a name="line.766"></a>
<FONT color="green">767</FONT>                    Integer widest = 0;<a name="line.767"></a>
<FONT color="green">768</FONT>                    Class&lt;?&gt; widestNumberType = Byte.class;<a name="line.768"></a>
<FONT color="green">769</FONT>                    for (final Number number : numbers) {<a name="line.769"></a>
<FONT color="green">770</FONT>                            final Integer size = numSizes.get(number.getClass());<a name="line.770"></a>
<FONT color="green">771</FONT>                            if (size &gt; widest) {<a name="line.771"></a>
<FONT color="green">772</FONT>                                    widestNumberType = number.getClass();<a name="line.772"></a>
<FONT color="green">773</FONT>                                    widest = size;<a name="line.773"></a>
<FONT color="green">774</FONT>                            }<a name="line.774"></a>
<FONT color="green">775</FONT>                    }<a name="line.775"></a>
<FONT color="green">776</FONT>                    return widestNumberType;<a name="line.776"></a>
<FONT color="green">777</FONT>            }<a name="line.777"></a>
<FONT color="green">778</FONT>    <a name="line.778"></a>
<FONT color="green">779</FONT>            /**<a name="line.779"></a>
<FONT color="green">780</FONT>             * Returns a list of names that represent the fields on an &lt;code&gt;Object&lt;/code&gt;.<a name="line.780"></a>
<FONT color="green">781</FONT>             * <a name="line.781"></a>
<FONT color="green">782</FONT>             * @param subject The &lt;code&gt;Object&lt;/code&gt; who's properties/fields need to be reflected.<a name="line.782"></a>
<FONT color="green">783</FONT>             * @return A list of names that represent the fields on the given &lt;code&gt;Object&lt;/code&gt;.<a name="line.783"></a>
<FONT color="green">784</FONT>             */<a name="line.784"></a>
<FONT color="green">785</FONT>            public static Collection&lt;String&gt; collectProperties(final Object subject) {<a name="line.785"></a>
<FONT color="green">786</FONT>                    final Collection&lt;String&gt; properties = new LinkedHashSet&lt;String&gt;();<a name="line.786"></a>
<FONT color="green">787</FONT>                    // collect properties/fields<a name="line.787"></a>
<FONT color="green">788</FONT>                    final Field[] fields = subject.getClass().getFields();<a name="line.788"></a>
<FONT color="green">789</FONT>                    for (final Field f : fields) {<a name="line.789"></a>
<FONT color="green">790</FONT>                            properties.add(f.getName());<a name="line.790"></a>
<FONT color="green">791</FONT>                    }<a name="line.791"></a>
<FONT color="green">792</FONT>                    return properties;<a name="line.792"></a>
<FONT color="green">793</FONT>            }<a name="line.793"></a>
<FONT color="green">794</FONT>    <a name="line.794"></a>
<FONT color="green">795</FONT>            /**<a name="line.795"></a>
<FONT color="green">796</FONT>             * Returns a list of names that represent the methods on an &lt;code&gt;Object&lt;/code&gt;. For Dynamics, the stored methods are returned (not the<a name="line.796"></a>
<FONT color="green">797</FONT>             * Java methods of the class Dynamic).<a name="line.797"></a>
<FONT color="green">798</FONT>             * <a name="line.798"></a>
<FONT color="green">799</FONT>             * @param subject The &lt;code&gt;Object&lt;/code&gt; or &lt;code&gt;Dynamic&lt;/code&gt; who's methods need to be reflected.<a name="line.799"></a>
<FONT color="green">800</FONT>             * @return Returns a list with methods, either {@link Method}s, or &lt;code&gt;Dynamic&lt;/code&gt; methods.<a name="line.800"></a>
<FONT color="green">801</FONT>             */<a name="line.801"></a>
<FONT color="green">802</FONT>            public static Collection&lt;String&gt; collectMethods(final Object subject) {<a name="line.802"></a>
<FONT color="green">803</FONT>                    final Collection&lt;String&gt; methods = new LinkedHashSet&lt;String&gt;();<a name="line.803"></a>
<FONT color="green">804</FONT>                    // collect methods<a name="line.804"></a>
<FONT color="green">805</FONT>                    final Method[] methodlist = subject.getClass().getMethods();<a name="line.805"></a>
<FONT color="green">806</FONT>                    for (final Method m : methodlist) {<a name="line.806"></a>
<FONT color="green">807</FONT>                            methods.add(m.getName());<a name="line.807"></a>
<FONT color="green">808</FONT>                    }<a name="line.808"></a>
<FONT color="green">809</FONT>                    return methods;<a name="line.809"></a>
<FONT color="green">810</FONT>            }<a name="line.810"></a>
<FONT color="green">811</FONT>    <a name="line.811"></a>
<FONT color="green">812</FONT>            /**<a name="line.812"></a>
<FONT color="green">813</FONT>             * Shortcut helper method that replaces an item in an array and returns the array itself.<a name="line.813"></a>
<FONT color="green">814</FONT>             * <a name="line.814"></a>
<FONT color="green">815</FONT>             * @param &lt;T&gt; The type of object that goes into the array.<a name="line.815"></a>
<FONT color="green">816</FONT>             * @param array The array that needs an item replaced.<a name="line.816"></a>
<FONT color="green">817</FONT>             * @param index The index at which the new value should be inserted.<a name="line.817"></a>
<FONT color="green">818</FONT>             * @param value The value to insert at the specified index in the specified array.<a name="line.818"></a>
<FONT color="green">819</FONT>             * @return The specified array with the item replaced at specified index.<a name="line.819"></a>
<FONT color="green">820</FONT>             */<a name="line.820"></a>
<FONT color="green">821</FONT>            public static &lt;T&gt; T[] replaceInArray(final T[] array, final int index, final T value) {<a name="line.821"></a>
<FONT color="green">822</FONT>                    array[index] = value;<a name="line.822"></a>
<FONT color="green">823</FONT>                    return array;<a name="line.823"></a>
<FONT color="green">824</FONT>            }<a name="line.824"></a>
<FONT color="green">825</FONT>    }<a name="line.825"></a>




























































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